Table 3.

Association between costs and patient treatment variables (rank correlations after Spearman)

Variable	Category	n	Total costs				Direct costs
			Median	Mean rank	z	P≤	Median	Mean rank	z	P≤
Sex	Male	81	432.6	105.3	−0.499	0.618	527.7	105.3	−0.502	0.615
	Female	134	512.7	109.7			569.5	109.7
Age	<71	104	493.7	99.2	−0.322	0.748	553.3	100.9	−0.108	0.914
	>71	96	521.9	101.9			551.3	100.0
BMI	<median	108	458.8	108.9	−0.022	0.983	538.8	109.7	−0.154	0.878
	>median	109	512.6	109.1			563.9	108.4
Numbers of wounds	1 wound	100	426.0	77.3	−3.797	0.000	487.1	77.5	−3.734	0.000
	>1 wound	80	710.8	107.0			772.0	106.7
Wound size	<median	108	427.1	97.3	−2.822	0.005	522.1	97.0	−2.89	0.004
	>median	110	594.8	121.5			685.7	121.8
Need for external help	<median	107	284.9	87.7	−4.226	0.001	438.8	89.7	−3.739	0.001
	>median	102	742.6	123.1			772.0	121.0
Treatment time	<median	153	427.5	99.8	−2.396	0.017	490.4	99.3	−2.601	0.009
	>median	58	682.1	122.4			772.4	123.8
Management CLU	<median	139	487.0	99.9	−1.267	0.205	543.4	98.9	−1.601	0.109
	>median	67	613.3	111.1			698.0	113.1

BMI, body mass index; CLU, chronic leg ulcer.